One of the following sewage systems:
(1) a sewage treatment approved by the flag State Administration; or (2) a sewage comminuting disinfecting system approved by the flag State Administration for the temporary storage of sewage when the ship is less than 3 nautical miles from the nearest land; or (3) a holding tank of a capacity to the satisfaction of the flag State Administration, for the retention of all sewage, having regard to the operation of the ship, the number of persons on board and other relevant factors, with means to indicate visually the amount of its contents. (MARPOL Annex IV reg. 9) A standard discharge connection must also be provided to enable pipes of reception facilities to be connected with the ship’s discharge pipeline. (MARPOL Annex IV reg. 10)
